Stoichiometry and Limiting Reactant

If 15 grams of copper (II) chloride react with 20 grams of sodium nitrate, how much sodium chloride can be formed? 

• 13.04 g
• 130.4 moles
• 130.4 g
• 13.04 moles

Tags

NGSS.HS-PS1-7

How many grams of ammonia (NH₃) can be produced from the reaction of 28 g of nitrogen gas and 25 grams of hydrogen gas? 

• 43 g
• 34 moles
• 25 grams
• 34 grams

Tags

NGSS.HS-PS1-7

Silver nitrate and sodium phosphate are reacted in equal amounts of 200 g each. How many grams of silver phosphate are produced? 
3AgNO₃  + Na₃(PO₄)  --->  Ag₃(PO₄)  + 3NaNO₃

• 164 g
• 64 g
• 146 g
• 164 moles

Tags

NGSS.HS-PS1-7

Identify the limiting reagent when 6.00 g HCl combines with 5.00 g Mg to form MgCl₂.
a.  Mg +  2HCl --> MgCl₂  +  H₂   
b.  a.  Mg +  2HCl --> MgCl₂  +  H₂   

• Mg
• H₂
• MgCl₂
• HCl

Nitric acid can be neutralized by any base to form a salt and water, as in the following equation:

Mg(OH)₂ + 2 HNO₃ → Mg(NO₃)₂ + 2 H_­2O

How much magnesium nitrate salt will be formed by the reaction of 250 g magnesium hydroxide with 250 g nitric acid?

• 294 g

• 636 g

• 147 g

• 318 g

Tags

NGSS.HS-PS1-7

A propane grill on a backyard patio is left burning for too long and eventually goes out. Which of the following chemicals is the limiting reagent?

• oxygen gas

• propane

• carbon dioxide

• water vapor

In a small-scale experiment, 29.3 g of silver nitrate in solution is reacted with excess copper wire:

2 AgNO₃ + Cu → Cu(NO₃)₂ + 2 Ag

How much copper (II) nitrate can theoretically be formed in this reaction?

• 16.2 g

• 64.7 g

• 5.5 g

• 32.3 g

Tags

NGSS.HS-PS1-7

Mercury (I) carbonate will break down when exposed to heat:

Hg₂CO₃ → Hg₂O + CO₂

How much Hg₂O will be formed when 2.50 g of Hg₂CO₃ is decomposed?

• 1.17 g

• 2.26 g

• 0.0977 g

• 4.00 g

Tags

NGSS.HS-PS1-7

2Al + 3H₂SO₄ -> Al₂(SO₄)₃ + 3H₂
How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum?

• 0.85 g
• 290 g
• 450 g
• 870 g

Tags

NGSS.HS-PS1-7

What is the mole ratio of H₂O to H₃PO₄ in the following chemical equation?   P₄O₁₀ + 6 H₂O --> 4 H₃PO₄ 

• 6:4
• 4:6
• 1:3
• 3:1

Tags

NGSS.HS-PS1-7